Blood could use this for a "panic" Death Strike.Frost and Unholy would be able to maintain both diseases and even gain a free rune (free Frost Fever via Rime or Ebon Plaguebringer respectively).

Edit: Blood has near eternal disease duration so this mainly applies to Frost.

Comment by Rieper

I think if it gave runic power instead you could pull diseases off giving you power for the next fight for say keeping shadow infusion up on your ghoul while you wait for the next pull or more energy for your next outbreak shot with the new outbreak glyph or maybe for frost could help keep up a rotation if you was struggling with runic power balance. Another idea is if you needed a quick combat res use this and res the tank if your low on power.

I don't understand how this could actually be useful. By the time you've kill a pack, moved to the next pack your runes will be back up again and if you need to transfer diseases to another target there's lots of other utility for that. I don't think it's worth only 1 rune. This would be another ability rarely used

Comment by rodalpho

UsagePlague Leech is best used when your diseases have <3 seconds remaining duration. It can also be used when a fully diseased target is about to die.

ValueFrost: 2 death runes every 30 seconds. Unholy: 2 death runes every 60 seconds. Unholy diseases last 60s due to the use of Festering Strike.Blood: 2 death runes every 60 seconds. Blood diseases last forever due to the use of , and Outbreak has a 60s cooldown.

ComparisonUnholy Blight, the alternative talent in the same tier, is worth at most 1 unholy rune every 100-120 seconds. See its page for a more detailed explanation as it is counter-intuitive.

Comment by Malifescent

I find that this is a very good talent for tanking, because you can plague leech to get yourself runes for a death strike and then use outbreak to re-apply (I've taken the glyph where outbreak has no cd, but costs 40rp).The death strike you gain from plague leech gives you enough rp to apply outbreak with ease =]

Comment by Larkster77

This is where many of you commenting are mistaken.

Roiling Blood DOES generate runes in that it refreshes the diseases on your main target in addition to all around you. Pestilence will spread the disease, but will not refresh it on main target.

This means that before your diseases drop off after ~30 seconds one blood rune is saving you putting up two diseases and using two globals unless you have outbreak handy.

If you're attacking a boss and Plague Leeching your diseases before they run off, that's using a global to activate a rune and then reapply both diseases. Roiling blood skips that step and simply keeps the diseases rolling at full duration and spreads them for good measure.

Unholy Blight is more situationally useful for instances in which many targets will be near, but only for a short amount of time, or if in pvp and healers are cleansing your diseases, as they constantly reapply every second.

Plague Leech is a waste of space on the talent bar.

Comment by SaberGeorge

Forgive a poor noob. Maybe I'm missing something. Combining this with Pestilence is the way to stay ahead of rune depletion in battle grounds? Target A gets hit with pestilence, you start running low, plague leech target b, follow with obliterates (I'm Frost) and pestilence on Target A until dead (rinse and repeat as needed). then move on to Targets B and C, etc?

Switching from a dying/runaway-monk/someone who like to runaway, to another target who is attacking me. *I get one extra Death Rune, yay!*

Plague Leech also really helps when facing a healer who "loves" dispelling my diseases, and helps generate Death Runes for stacking extra on them. is better when I'm constantly facing masses of 2+ opponents like in an AV turtle. But in 1v1 situations, Plague Leech proves to be way better for me.Unholy Blight is just novelty...

Plague Leech is the best IMO in PvP 1v1 for damage up-time in the case of UH DKs.